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SELECTED FINANCIAL STATEMENT INFORMATION SELECTED FINANCIAL STATEMENT INFORMATION (Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Apr. 30, 2018
Apr. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Starting accumulated other comprehensive loss     $ (10,556)  
Unrealized gain     9,034  
Amortization of unrealized loss on defined benefit pension plan, net of tax $ 2 $ 8 6 $ 15
Ending accumulated other comprehensive loss (1,516)   (1,516)  
Foreign Currency Translation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Starting accumulated other comprehensive loss     (9,533)  
Unrealized gain     8,813  
Ending accumulated other comprehensive loss (720)   (720)  
Pension Benefit Obligation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Starting accumulated other comprehensive loss     (1,023)  
Unrealized gain     221  
Amortization of unrealized loss on defined benefit pension plan, net of tax     6  
Ending accumulated other comprehensive loss $ (796)   $ (796)